Belzona 3211 (Lagseal) is water, weather and fire resistant, and conforms to the requirements for a ‘Class O’ surface for ‘The UK Building Regulations 1991’ and ‘Class A’ in accordance with ‘ASTM E84’. The system provides protection from water ingress whilst its microporous nature allows trapped moisture from within the insulation to evaporate. This solvent-free, single pack system requires no mixing and is simple to apply to damp as well as dry insulation.

Key benefits:

Fire resistant

Easily applied by brush with no mixing required

Reduced health and safety risks as it is solvent-free

Application and cure at cold temperature - no hot work involved

Will not support growth of bacteria or algae providing a hygienic finish

Excellent oil resistance

Withstands movement due to temperature fluctuations and vibrations within the system

370 psi (2.5N per sq.mm) unreinforced system after 7 days at 20°C (68°F)

Vapor resistance at 20°C (68°F)

10 MN/sg

Fire resistance

The UK Building Regulations 1991 conforms to the requirements for a Class O surface
ASTM E84 meets class A with flame spread index less than 25 and smoke developed index less than 100
BS 476 Part 6 - 2.8
BS 476 Part 7 meets class 1 surface spread flame

Oil resistance

The system is unaffected by immersion for 24 hours in light fuel and lubricating oil at 50°C (122°F)